mysql中四种备份模式

Mysql 备份几种范例
1. 备份整个数据库
mysqldump -u username -p dbname > backup.sql

2 备份指定表
mysqldump -u username -p dbname table1 table2 > backup.sql

3. 压缩备份文件
mysqldump -u username -p dbname | gzip > backup.sql.gz

4. 回复备份文件
mysql -u username -p dbname < backup.sql

#!/bin/bash

USER=username
PASSWORD=password
DATABASE=dbname
BACKUP_DIR=/backup/mysql
DATE=$(date +%Y-%m-%d-%H-%M-%S)
BACKUP_FILE=$BACKUP_DIR/$DATABASE-$DATE.sql

# 创建备份目录
if [ ! -d $BACKUP_DIR ]; then
  mkdir -p $BACKUP_DIR
fi

# 备份数据库
mysqldump -u$USER -p$PASSWORD $DATABASE > $BACKUP_FILE

# 压缩备份文件
gzip $BACKUP_FILE

# 删除过期备份
find $BACKUP_DIR -name "$DATABASE-*.gz" -type f -mtime +7 –delete

import subprocess
import os
import datetime

# 数据库连接参数
MYSQL_HOST = 'localhost'
MYSQL_PORT = '3306'
MYSQL_USER = 'username'
MYSQL_PASSWORD = 'password'
DATABASE = 'dbname'

# 备份文件存储路径
BACKUP_DIR = '/backup/mysql'

# 创建备份目录
if not os.path.exists(BACKUP_DIR):
    os.makedirs(BACKUP_DIR)

# 获取当前时间，作为备份文件名的一部分
now = datetime.datetime.now().strftime('%Y-%m-%d-%H-%M-%S')

# 备份文件名
backup_file = f'{DATABASE}-{now}.sql'

# mysqldump命令
cmd = f"mysqldump -h{MYSQL_HOST} -P{MYSQL_PORT} -u{MYSQL_USER} -p{MYSQL_PASSWORD} {DATABASE} > {BACKUP_DIR}/{backup_file}"

# 执行备份命令
subprocess.run(cmd, shell=True, check=True)

# 压缩备份文件
gzip_cmd = f"gzip {BACKUP_DIR}/{backup_file}"
subprocess.run(gzip_cmd, shell=True, check=True)

# 删除过期备份文件
delete_cmd = f"find {BACKUP_DIR} -name '{DATABASE}-*.gz' -type f -mtime +7 -delete"
subprocess.run(delete_cmd, shell=True, check=True)